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Rename emacs stuff to make room for spacemacs

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Hunter Haugen 2015-01-08 12:29:53 -08:00
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;;; haskell-mode.el --- A Haskell editing mode -*-coding: iso-8859-1;-*-
;; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc
;; Copyright (C) 1992, 1997-1998 Simon Marlow, Graeme E Moss, and Tommy Thorn
;; Authors: 1992 Simon Marlow
;; 1997-1998 Graeme E Moss <gem@cs.york.ac.uk> and
;; Tommy Thorn <thorn@irisa.fr>,
;; 2001-2002 Reuben Thomas (>=v1.4)
;; 2003 Dave Love <fx@gnu.org>
;; Keywords: faces files Haskell
;; Version: v2.6.4
;; URL: http://www.haskell.org/haskell-mode/
;; This file is not part of GNU Emacs.
;; This file is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Purpose:
;;
;; To provide a pleasant mode to browse and edit Haskell files, linking
;; into the following supported modules:
;;
;; `haskell-font-lock', Graeme E Moss and Tommy Thorn
;; Fontifies standard Haskell keywords, symbols, functions, etc.
;;
;; `haskell-decl-scan', Graeme E Moss
;; Scans top-level declarations, and places them in a menu.
;;
;; `haskell-doc', Hans-Wolfgang Loidl
;; Echoes types of functions or syntax of keywords when the cursor is idle.
;;
;; `haskell-indentation', Kristof Bastiaensen
;; Intelligent semi-automatic indentation, mark two.
;;
;; `haskell-indent', Guy Lapalme
;; Intelligent semi-automatic indentation.
;;
;; `haskell-simple-indent', Graeme E Moss and Heribert Schuetz
;; Simple indentation.
;;
;; `inf-haskell'
;; Interaction with an inferior Haskell process.
;; It replaces the previous two modules:
;; `haskell-hugs', Guy Lapalme
;; `haskell-ghci', Chris Web
;;
;;
;; This mode supports full Haskell 1.4 including literate scripts.
;; In some versions of (X)Emacs it may only support Latin-1, not Unicode.
;;
;; History:
;;
;; This mode is based on an editing mode by Simon Marlow 11/1/92
;; and heavily modified by Graeme E Moss and Tommy Thorn 7/11/98.
;;
;; If you have any problems or suggestions specific to a supported
;; module, consult that module for a list of known bugs, and an
;; author to contact via email. For general problems or suggestions,
;; consult the list below, then email gem@cs.york.ac.uk and
;; thorn@irisa.fr quoting the version of the mode you are using, the
;; version of Emacs you are using, and a small example of the problem
;; or suggestion.
;;
;; Version 1.5
;; Added autoload for haskell-indentation
;;
;; Version 1.43:
;; Various tweaks to doc strings and customization support from
;; Ville Skyttä <scop@xemacs.org>.
;;
;; Version 1.42:
;; Added autoload for GHCi inferior mode (thanks to Scott
;; Williams for the bug report and fix).
;;
;; Version 1.41:
;; Improved packaging, and made a couple more variables
;; interactively settable.
;;
;; Version 1.4:
;; Added GHCi mode from Chris Webb, and tidied up a little.
;;
;; Version 1.3:
;; The literate or non-literate style of a buffer is now indicated
;; by just the variable haskell-literate: nil, `bird', or `tex'.
;; For literate buffers with ambiguous style, the value of
;; haskell-literate-default is used.
;;
;; Version 1.2:
;; Separated off font locking, declaration scanning and simple
;; indentation, and made them separate modules. Modules can be
;; added easily now. Support for modules haskell-doc,
;; haskell-indent, and haskell-hugs. Literate and non-literate
;; modes integrated into one mode, and literate buffer indicated by
;; value of haskell-literate(-bird-style).
;;
;; Version 1.1:
;; Added support for declaration scanning under XEmacs via
;; func-menu. Moved operators to level two fontification.
;;
;; Version 1.0:
;; Added a nice indention support from Heribert Schuetz
;; <Heribert.Schuetz@informatik.uni-muenchen.de>:
;;
;; I have just hacked an Emacs Lisp function which you might prefer
;; to `indent-relative' in haskell-mode.el. See below. It is not
;; really Haskell-specific because it does not take into account
;; keywords like `do', `of', and `let' (where the layout rule
;; applies), but I already find it useful.
;;
;; Cleaned up the imenu support. Added support for literate scripts.
;;
;; Version 0.103 [HWL]:
;; From Hans Wolfgang Loidl <hwloidl@dcs.gla.ac.uk>:
;;
;; I (HWL) added imenu support by copying the appropriate functions
;; from hugs-mode. A menu-bar item "Declarations" is now added in
;; haskell mode. The new code, however, needs some clean-up.
;;
;; Version 0.102:
;;
;; Moved C-c C-c key binding to comment-region. Leave M-g M-g to do
;; the work. comment-start-skip is changed to comply with comment-start.
;;
;; Version 0.101:
;;
;; Altered indent-line-function to indent-relative.
;;
;; Version 0.100:
;;
;; First official release.
;; Present Limitations/Future Work (contributions are most welcome!):
;;
;; . Would like RET in Bird-style literate mode to add a ">" at the
;; start of a line when previous line starts with ">". Or would
;; "> " be better?
;;
;; . Support for GreenCard?
;;
;;; Code:
(eval-when-compile (require 'cl))
;; All functions/variables start with `(literate-)haskell-'.
;; Version of mode.
(defconst haskell-version "v2.6.4"
"`haskell-mode' version number.")
(defun haskell-version ()
"Echo the current version of `haskell-mode' in the minibuffer."
(interactive)
(message "Using haskell-mode version %s" haskell-version))
(defgroup haskell nil
"Major mode for editing Haskell programs."
:group 'languages
:prefix "haskell-")
;; Set load-path
;;;###autoload
(add-to-list 'load-path
(or (file-name-directory load-file-name) (car load-path)))
;; Set up autoloads for the modules we supply
(autoload 'turn-on-haskell-decl-scan "haskell-decl-scan"
"Turn on Haskell declaration scanning." t)
(autoload 'turn-on-haskell-doc-mode "haskell-doc"
"Turn on Haskell Doc minor mode." t)
(autoload 'turn-on-haskell-indentation "haskell-indentation"
"Turn on advanced Haskell indentation." t)
(autoload 'turn-on-haskell-indent "haskell-indent"
"Turn on Haskell indentation." t)
(autoload 'turn-on-haskell-simple-indent "haskell-simple-indent"
"Turn on simple Haskell indentation." t)
;; Functionality provided in other files.
(autoload 'haskell-ds-create-imenu-index "haskell-decl-scan")
(autoload 'haskell-font-lock-choose-keywords "haskell-font-lock")
(autoload 'haskell-doc-current-info "haskell-doc")
;; Obsolete functions.
(defun turn-on-haskell-font-lock ()
(turn-on-font-lock)
(message "turn-on-haskell-font-lock is obsolete. Use turn-on-font-lock instead."))
(defun turn-on-haskell-hugs () (message "haskell-hugs is obsolete."))
(defun turn-on-haskell-ghci () (message "haskell-ghci is obsolete."))
;; Are we looking at a literate script?
(defvar haskell-literate nil
"*If not nil, the current buffer contains a literate Haskell script.
Possible values are: `bird' and `tex', for Bird-style and LaTeX-style
literate scripts respectively. Set by `haskell-mode' and
`literate-haskell-mode'. For an ambiguous literate buffer -- ie. does
not contain either \"\\begin{code}\" or \"\\end{code}\" on a line on
its own, nor does it contain \">\" at the start of a line -- the value
of `haskell-literate-default' is used.")
(make-variable-buffer-local 'haskell-literate)
(put 'haskell-literate 'safe-local-variable 'symbolp)
;; Default literate style for ambiguous literate buffers.
(defcustom haskell-literate-default 'bird
"Default value for `haskell-literate'.
Used if the style of a literate buffer is ambiguous. This variable should
be set to the preferred literate style."
:type '(choice (const bird) (const tex) (const nil)))
;; Mode maps.
(defvar haskell-mode-map
(let ((map (make-sparse-keymap)))
;; Bindings for the inferior haskell process:
;; (define-key map [?\M-C-x] 'inferior-haskell-send-defun)
;; (define-key map [?\C-x ?\C-e] 'inferior-haskell-send-last-sexp)
;; (define-key map [?\C-c ?\C-r] 'inferior-haskell-send-region)
(define-key map [?\C-c ?\C-z] 'switch-to-haskell)
(define-key map [?\C-c ?\C-l] 'inferior-haskell-load-file)
;; I think it makes sense to bind inferior-haskell-load-and-run to C-c
;; C-r, but since it used to be bound to `reload' until june 2007, I'm
;; going to leave it out for now.
;; (define-key map [?\C-c ?\C-r] 'inferior-haskell-load-and-run)
(define-key map [?\C-c ?\C-b] 'switch-to-haskell)
;; (define-key map [?\C-c ?\C-s] 'inferior-haskell-start-process)
;; That's what M-; is for.
;; (define-key map "\C-c\C-c" 'comment-region)
(define-key map (kbd "C-c C-t") 'inferior-haskell-type)
(define-key map (kbd "C-c C-i") 'inferior-haskell-info)
(define-key map (kbd "C-c M-.") 'inferior-haskell-find-definition)
(define-key map (kbd "C-c C-d") 'inferior-haskell-find-haddock)
(define-key map [remap delete-indentation] 'haskell-delete-indentation)
map)
"Keymap used in Haskell mode.")
(easy-menu-define haskell-mode-menu haskell-mode-map
"Menu for the Haskell major mode."
;; Suggestions from Pupeno <pupeno@pupeno.com>:
;; - choose the underlying interpreter
;; - look up docs
`("Haskell"
["Indent line" indent-according-to-mode]
["Indent region" indent-region mark-active]
["(Un)Comment region" comment-region mark-active]
"---"
["Start interpreter" switch-to-haskell]
["Load file" inferior-haskell-load-file]
"---"
,(if (default-boundp 'eldoc-documentation-function)
["Doc mode" eldoc-mode
:style toggle :selected (bound-and-true-p eldoc-mode)]
["Doc mode" haskell-doc-mode
:style toggle :selected (and (boundp 'haskell-doc-mode) haskell-doc-mode)])
["Customize" (customize-group 'haskell)]
))
;; Syntax table.
(defvar haskell-mode-syntax-table
(let ((table (make-syntax-table)))
(modify-syntax-entry ?\ " " table)
(modify-syntax-entry ?\t " " table)
(modify-syntax-entry ?\" "\"" table)
(modify-syntax-entry ?\' "\'" table)
(modify-syntax-entry ?_ "w" table)
(modify-syntax-entry ?\( "()" table)
(modify-syntax-entry ?\) ")(" table)
(modify-syntax-entry ?\[ "(]" table)
(modify-syntax-entry ?\] ")[" table)
(cond ((featurep 'xemacs)
;; I don't know whether this is equivalent to the below
;; (modulo nesting). -- fx
(modify-syntax-entry ?{ "(}5" table)
(modify-syntax-entry ?} "){8" table)
(modify-syntax-entry ?- "_ 1267" table))
(t
;; In Emacs 21, the `n' indicates that they nest.
;; The `b' annotation is actually ignored because it's only
;; meaningful on the second char of a comment-starter, so
;; on Emacs 20 and before we get wrong results. --Stef
(modify-syntax-entry ?\{ "(}1nb" table)
(modify-syntax-entry ?\} "){4nb" table)
(modify-syntax-entry ?- "_ 123" table)))
(modify-syntax-entry ?\n ">" table)
(let (i lim)
(map-char-table
(lambda (k v)
(when (equal v '(1))
;; The current Emacs 22 codebase can pass either a char
;; or a char range.
(if (consp k)
(setq i (car k)
lim (cdr k))
(setq i k
lim k))
(while (<= i lim)
(when (> i 127)
(modify-syntax-entry i "_" table))
(setq i (1+ i)))))
(standard-syntax-table)))
(modify-syntax-entry ?\` "$`" table)
(modify-syntax-entry ?\\ "\\" table)
(mapc (lambda (x)
(modify-syntax-entry x "_" table))
;; Some of these are actually OK by default.
"!#$%&*+./:<=>?@^|~")
(unless (featurep 'mule)
;; Non-ASCII syntax should be OK, at least in Emacs.
(mapc (lambda (x)
(modify-syntax-entry x "_" table))
(concat "¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿"
"×÷"))
(mapc (lambda (x)
(modify-syntax-entry x "w" table))
(concat "ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ"
"ØÙÚÛÜÝÞß"
"àáâãäåæçèéêëìíîïðñòóôõö"
"øùúûüýþÿ")))
table)
"Syntax table used in Haskell mode.")
(defun haskell-ident-at-point ()
"Return the identifier under point, or nil if none found.
May return a qualified name."
(save-excursion
(let ((case-fold-search nil))
(multiple-value-bind (start end)
(if (looking-at "\\s_")
(values (progn (skip-syntax-backward "_") (point))
(progn (skip-syntax-forward "_") (point)))
(values
(progn (skip-syntax-backward "w'")
(skip-syntax-forward "'") (point))
(progn (skip-syntax-forward "w'") (point))))
;; If we're looking at a module ID that qualifies further IDs, add
;; those IDs.
(goto-char start)
(while (and (looking-at "[[:upper:]]") (eq (char-after end) ?.)
;; It's a module ID that qualifies further IDs.
(goto-char (1+ end))
(save-excursion
(when (not (zerop (skip-syntax-forward
(if (looking-at "\\s_") "_" "w'"))))
(setq end (point))))))
;; If we're looking at an ID that's itself qualified by previous
;; module IDs, add those too.
(goto-char start)
(if (eq (char-after) ?.) (forward-char 1)) ;Special case for "."
(while (and (eq (char-before) ?.)
(progn (forward-char -1)
(not (zerop (skip-syntax-backward "w'"))))
(skip-syntax-forward "'")
(looking-at "[[:upper:]]"))
(setq start (point)))
;; This is it.
(buffer-substring-no-properties start end)))))
(defun haskell-delete-indentation (&optional arg)
"Like `delete-indentation' but ignoring Bird-stlye \">\"."
(interactive "*P")
(let ((fill-prefix (or fill-prefix (if (eq haskell-literate 'bird) ">"))))
(delete-indentation arg)))
;; Various mode variables.
(defcustom haskell-mode-hook nil
"Hook run after entering Haskell mode. Do not select more than one of the three indentation modes."
:type 'hook
:options '(turn-on-haskell-indent turn-on-haskell-indentation turn-on-font-lock turn-on-eldoc-mode
turn-on-simple-indent turn-on-haskell-doc-mode imenu-add-menubar-index))
(defvar eldoc-print-current-symbol-info-function)
;; The main mode functions
;;;###autoload
(define-derived-mode haskell-mode fundamental-mode "Haskell"
"Major mode for editing Haskell programs.
Blank lines separate paragraphs, comments start with `-- '.
\\<haskell-mode-map>
Literate scripts are supported via `literate-haskell-mode'.
The variable `haskell-literate' indicates the style of the script in the
current buffer. See the documentation on this variable for more details.
Modules can hook in via `haskell-mode-hook'. The following modules
are supported with an `autoload' command:
`haskell-decl-scan', Graeme E Moss
Scans top-level declarations, and places them in a menu.
`haskell-doc', Hans-Wolfgang Loidl
Echoes types of functions or syntax of keywords when the cursor is idle.
`haskell-indentation', Kristof Bastiaensen
Intelligent semi-automatic indentation Mk2
`haskell-indent', Guy Lapalme
Intelligent semi-automatic indentation.
`haskell-simple-indent', Graeme E Moss and Heribert Schuetz
Simple indentation.
Module X is activated using the command `turn-on-X'. For example,
`haskell-indent' is activated using `turn-on-haskell-indent'.
For more information on a module, see the help for its `X-mode'
function. Some modules can be deactivated using `turn-off-X'. (Note
that `haskell-doc' is irregular in using `turn-(on/off)-haskell-doc-mode'.)
Use `haskell-version' to find out what version this is.
Invokes `haskell-mode-hook'."
(set (make-local-variable 'paragraph-start) (concat "^$\\|" page-delimiter))
(set (make-local-variable 'paragraph-separate) paragraph-start)
(set (make-local-variable 'comment-start) "-- ")
(set (make-local-variable 'comment-padding) 0)
(set (make-local-variable 'comment-start-skip) "[-{]-[ \t]*")
(set (make-local-variable 'comment-end) "")
(set (make-local-variable 'comment-end-skip) "[ \t]*\\(-}\\|\\s>\\)")
(set (make-local-variable 'parse-sexp-ignore-comments) t)
;; Set things up for eldoc-mode.
(set (make-local-variable 'eldoc-documentation-function)
'haskell-doc-current-info)
;; Set things up for imenu.
(set (make-local-variable 'imenu-create-index-function)
'haskell-ds-create-imenu-index)
;; Set things up for font-lock.
(set (make-local-variable 'font-lock-defaults)
'(haskell-font-lock-choose-keywords
nil nil ((?\' . "w") (?_ . "w")) nil
(font-lock-syntactic-keywords
. haskell-font-lock-choose-syntactic-keywords)
(font-lock-syntactic-face-function
. haskell-syntactic-face-function)
;; Get help from font-lock-syntactic-keywords.
(parse-sexp-lookup-properties . t)))
;; Haskell's layout rules mean that TABs have to be handled with extra care.
;; The safer option is to avoid TABs. The second best is to make sure
;; TABs stops are 8 chars apart, as mandated by the Haskell Report. --Stef
(set (make-local-variable 'indent-tabs-mode) nil)
(set (make-local-variable 'tab-width) 8)
(setq haskell-literate nil))
;;;###autoload
(define-derived-mode literate-haskell-mode haskell-mode "LitHaskell"
"As `haskell-mode' but for literate scripts."
(setq haskell-literate
(save-excursion
(goto-char (point-min))
(cond
((re-search-forward "^\\\\\\(begin\\|end\\){code}$" nil t) 'tex)
((re-search-forward "^>" nil t) 'bird)
(t haskell-literate-default))))
(if (eq haskell-literate 'bird)
;; fill-comment-paragraph isn't much use there, and even gets confused
;; by the syntax-table text-properties we add to mark the first char
;; of each line as a comment-starter.
(set (make-local-variable 'fill-paragraph-handle-comment) nil))
(set (make-local-variable 'mode-line-process)
'("/" (:eval (symbol-name haskell-literate)))))
;;;###autoload(add-to-list 'auto-mode-alist '("\\.\\(?:[gh]s\\|hi\\)\\'" . haskell-mode))
;;;###autoload(add-to-list 'auto-mode-alist '("\\.l[gh]s\\'" . literate-haskell-mode))
(defcustom haskell-hoogle-command
(if (executable-find "hoogle") "hoogle")
"Name of the command to use to query Hoogle.
If nil, use the Hoogle web-site."
:type '(choice (const :tag "Use Web-site" nil)
string))
;;;###autoload
(defun haskell-hoogle (query)
"Do a Hoogle search for QUERY."
(interactive
(let ((def (haskell-ident-at-point)))
(if (and def (symbolp def)) (setq def (symbol-name def)))
(list (read-string (if def
(format "Hoogle query (default %s): " def)
"Hoogle query: ")
nil nil def))))
(if (null haskell-hoogle-command)
(browse-url (format "http://haskell.org/hoogle/?q=%s" query))
(if (fboundp 'help-setup-xref)
(help-setup-xref (list 'haskell-hoogle query) (interactive-p)))
(with-output-to-temp-buffer
(if (fboundp 'help-buffer) (help-buffer) "*Help*")
(with-current-buffer standard-output
(start-process "hoogle" (current-buffer) haskell-hoogle-command
query)))))
;;;###autoload
(defalias 'hoogle 'haskell-hoogle)
;;;###autoload
(defun haskell-hayoo (query)
"Do a Hayoo search for QUERY."
(interactive
(let ((def (haskell-ident-at-point)))
(if (and def (symbolp def)) (setq def (symbol-name def)))
(list (read-string (if def
(format "Hayoo query (default %s): " def)
"Hayoo query: ")
nil nil def))))
(browse-url (format "http://holumbus.fh-wedel.de/hayoo/hayoo.html?query=%s" query)))
;;;###autoload
(defalias 'hayoo 'haskell-hayoo)
;; Provide ourselves:
(provide 'haskell-mode)
;; arch-tag: b2237ec0-ddb0-4c86-9339-52d410264980
;;; haskell-mode.el ends here